Tubular lantern.



WARREN MOARTHUR, JR., OF CHICAGO, ILLINOIS.

TUBULAR LANTERN.

Specification of Letters Patent.

Patented Aug. 12,1913.

Application filed August 31, 1912. Serial No. 717,998.

To all whom it may 007206? Be it known that I, WVARREN MOARTHUR, J r., a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Tubular Lanterns, of which the following is a specification.

This invention relates to that class of tubular lanterns in which the plate upon which the globe is mounted is hinged to the lower part of the lantern frame and in which the globe is held in its normal position by a chibmney which bears upon the top of the 10 e. b The object of this invention is to improve and simplify the devices by which the globe is held in position, and to that end the globe-holding chimney is composed of a fixed upper section which is secured in the lantern top and a movable lower section or collar which is hinged to the lower portion of the fixed section so as to bear upon the globe and hold the latter in position while being capable of being raised for releasing the globe.

In the accompanying drawings: Figure 1 is a front elevation of a lantern provided with this improvement, the globe being shown in its normal position. Fig. 2 is a side elevation, partly in section, showing the globe plate and globe tilted out of the normal position. Fig. 3 is a fragmentary side elevation, showing the globe plate and globe partially tilted out. Fig. 4 is a fragmentary vertical section of the adjacent portions of the fixed and movable chimney sections, on an enlarged scale. Fig. 5 is a fragmentary front elevation, showing a modified construction of the hinge connecting the movable section with the fixed section of the chimney.

Like reference characters refer to like parts in the several figures.

10 represents the oil font, 11 the air chamber on the same, and 12 the globe plate which is connected with the lower portion of the lantern frame by a hinge 13 and provided with guards 14 or other suitable clevices by which the globe 15 is removably held on the plate.

16 represents the tubes and 17 the air inlet chamber in the lantern top with which the upper ends of the tubes are connected.

18 represents the fixed section of the chimney which may be constructed and secured in the lantern top in any suitable manner.

19 represents the lower movable section of the chimney which has the form of a downwardlydlaring collar and which is provided at its upper end with an inturned flange 20 adapted to extend over an outwardly turned flange 21 at the lower end of the fixed section of the chimney. The movable section or collar 19 is connected at the front side of the lantern with the fixed section by a hinge 22 which permits the collar to be raised and lowered at the rear of the lantern. The collar is held yieldingly in its normal position by a spring 23 which encircles the fixed section of the chimney and is secured at one end to the latter and at the other end to the movable collar. Upon swinging the globe out of the normal position toward the rear of the lantern or forwardly toward the normal position, as represented in Fig. 3, the globe-holding collar or hinged chimney section is raised against the spring pressure and allows the globe to pass backwardly or forwardly, as the case may be. The guards on the globe plate are preferably made so high that the movable chimney section bears on the guard as the globe performs these movements, wherebv the movements are facilitated. When the globe is in its normal position the spring bearing upon the movable chimney section holds the latter in close contact with the top of the globe, so that the movable chimney section forms a practically tight passage in which the hot gases are confined and through which they flow from the globe to the fixed chimney section.

The particular construction and arrangement of the movable joint whereby the movable chimney section is supported is unimportant and may be varied in many ways, as well as the construction of the springand its connection with the fixed and movable chimney sections. In the construction of the joint represented in Fig. 5, the spring 24 is coiled around the hinge pint-1e, as usual in spring hinges.

I claim as my invention:

1. In a lantern, the combination with an upper fixed chimney section, of a movable annular lower section, and a pivotal joint which supports said movable section at one side of the lantern and permits said movable section to move up and down with an increasing movement from said joint toward the opposite side of the lantern and to bear upon the globe when in its lowered position, substantially as set forth.

2. In a lantern, the combination with an upper fixed chimney section, of a movable annular lower section, a pivotal joint which supports said movable section at one side of the lantern and permits said movable section to move up and down with an increasing movement from said joint toward the opposite side of the lantern and to bear upon the globe when in its lowered position, and a spring which presses said movable section downwardly, substantially as set forth.

3. In a lantern, the combination with a fixed upper chimney section, of a lower movable section formed by an annular collar which is adapted to bear upon the globe and which is hinged to the fixed section at one side of the lantern, substantially as set forth.

4. In a lantern, the combination with a fixed chimney section having an outwardly projecting flange at its lower end, of a movable chimney section having at its upper end an inwardly projecting flange which extends over the flange on the fixed section, and a movable joint supporting said sections at one side, substantially as set forth.

In a tubular lantern, the combination with the lantern frame having an air inlet chamber in its top portion, of a fixed chim ney section arranged within said chamber, and a tilting chimney section connected with said fixed section and adapted to bear upon the globe, substantially as set forth.

6. In a tubular lantern, the combination with the lantern frame having an air inlet chamber in its top portion, of a fixed chimney section arranged within said chamber, a tilting chimney section connected with said fixed section and adapted to bear upon the globe, and a spring which presses said tilting section downwardly, substantially as set forth.

7. In a tubular lantern, the combination with the lantern frame having in its top portion an air inlet chamber and in its lower portion a tilting globe plate which is pro vided with means for releasably holding the globe, of a fixed chimney section arranged within said chamber, and a tilting chimney section connected with said fixed section and adapted to bear upon the globe, substantially as set forth.

8. In a tubular lantern, the combination with the lantern frame having in its top portion an air inlet chamber and in its lower portion a tilting globe plate which is pro vided with means for releasably holding the globe, of a fixed chimney section arranged within said chamber, a tilting chimney section connected with said fixed section and WARREN MoARTl'IUR, JR.

lVitnesses JOSEPH LUDES, Jenn Lnins.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

